Resilient insole



May 25, 1943. M..MARGoL|N 2,319,318

I REsI'LIENT :msoxgna origina Filed May a, 1959 IN VENTOR.

ATTORNEYS yPatented May 25, 1943 RESILIENT INSOLE Meyer Margolin, Elgin, Ill.

May 8, 1939, Serial No.

Original application 272,364. Divided an 1940, Serial No. 344,414

3 Claims.

and more particularly to an insole, the forepart -v of which is resilient with a periphery of material stiff enough to hold the necessary stitching for attachment of the insole in the shoe. My novel insole has grooves located on the bottom thereof, which grooves are substantially rectangular in cross section. The grooves are adapted to be compressed and expanded to provide forced breathing which is transmitted by suitable perforations in the irisole to the interior of the shoe.

I provide ball cushion support for the foot by means of a central resilient lportion 'of greater thickness than the edge portion of lap and insole.

The prior art has long recognized the problem of a need for Va resilient forepart for the shoe. The desirability of an effective ventilation or forced breathing for the shoe has long been noted,

but up to the present time no constructions have been devised which suitably meet the problems of providing resilience and forced breathing in the forepart of the shoe.

My invention comprises a resilient insole, the forepart of which is primarily constructed of materials, such as cellular rubber or other resilient material, and the periphery of which comprises either leather alone or leather in combination with the resilient material, the leather providing stiiening and backing for holding the stitching. The relatively stiff material may be any material, the physical properties of which correspond to leather in this art.

I provide perforations in the resilient material which extend through the resilient material and I also provide certain transverse grooves which are alternately compressed and expanded by the action of the foot in walking so as to force air from these transverse grooves through the perforations to the foot itself.

I provide various constructions by means of which I can achieve the desirable objective of a resilient insole with stiff periphery, which insole is permeable to air and which insole may carry integral therewith metatarsal support and arch support.

It is the object of my invention to provide a novel'means lfor attaching a rubber-like forepart portion to a stiff shank piece.

It is a further object of my invention to form integrally with -a rubber-like. forepart portion of an insole, a metatarsal arch support and a projection adapted to fit into an opening in a shank d this application July 8,

piece to engage said forepart portion to said shank. a

Figure l shows a form of my invention in which I provide a resilient insole and a binding about the periphery thereof of a relatively stiff material adapted to receive stitching.

Figure 2 is a section taken along the line 2-2 of Figure 1. Figure 3 is a section taken along the line 3-3 of Figure l.

Figure 4 is a section taken ,along the line 4-4 of Figure l. l

Figure 5 is a section taken along the line 5--5 of Figure 1.

Referring now specifically to Figures l to 5 I show a form of my invention in which the resilient rubber-like forepart portion |00 is bound around the edges With'a stiff material |0| which may be leather or any suitable stiif binding material of that nature. The resilient insole here is cut down at the edge as shown at |02 so that the binding |0| lies ilush with the resilient portion |00. The forepart portion may have a metatarsal arch in the rear thereof. Under the metatarsal arch depends a projection |04.

The shank portion |03 is joined to the resilient forepart by means of the fitting of the projection |04 of the resilient forepart portion into the opening |05 in the shank portion and the stitching |06 and |01 secures said resilient portion to said stii shank portion. The stitching |l0 secures the stiffening material |0| to the resilient portion |00 and here only a single row is required. This is a particularly effective method for providing a resilient forepart with ,the stiiI edge portion that is necessary for receiving and holding the stitching when the shoe is assembled. In the main portion of the resilient material are transverse grooves which have spaced side walls and adjacent perforations ||2 having bosses ||3 thereon.

It is understood that the constructions set forth are by way of example of the principles of my invention only and that I intend to be limited not by the specific constructions shown but only by the claims here appended.

I claim:

1. A resilient insole comprising in combination an insole section of relatively stiff material, said insole section including the heel, long arch and metatarsal arch area; an opening in said insole section in'said metatarsal arch area; a rubber-like forepart portion; a metatarsal arch support formed on said rubber-like forepart portion in the metatarsal arch area; a projection integral with said rubber-like forepart portion, said vprojection engaging said opening in the metatarsal arch area of said insole section to secure said rubber-like forepart portion to said insole section.

2. A resilient insole comprising in combination an insole section of relatively stiff material, said insole section including the heel, long arch and metatarsal arch area; an opening in said insole section in said Inetatarsal arch area; a( rubberlike forepart portion; means for stiilening the edges of said rubber-like forepart portion, said means comprising a leather binding secured to the periphery of said rubber-like' forepart portion; a metatarsal arch support formed integrally with said rubber-like forepart portion; a projection formed integrally with said rubberlike forepart portion, said projection extending into said opening in said insole section to secure said rubber-like forepart portion to said insole section.

3. A resilient insole comprising in combination an insole section of relatively stii material, said insole section including the heel, long arch and metatarsal arch area; an opening in said insole section in said metatarsal arch area; a rubberlike forepart portion; means for stiilening the edges of said rubber-like forepart portion, said means comprising a leather binding secured to the periphery of said rubber-like forepart portion; a metatarsal arch support formed integrally with said 'rubber-like forepart portion; transverse grooves having spaced side walls on the bottom of said rubber-like forepart portion and perforations extending through said rubberlike forepart portion; and a projection formed integrally with rsaid rubber-like forepart portion, said projection extending into said opening in said insole section to secure said rubber-like forepart portion to said insole section.

MEYER MARGHN. 

